1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
xxMikexx [17]
3 years ago
12

On a 1 mile track, Runner A has made 18 laps in the time it took Runner B to make 8 laps. If Runner A is running 5 mph faster th

an Runner B, how fast is each of them running?
Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
6 0

9514 1404 393

Answer:

  • A: 9 mph
  • B: 4 mph

Step-by-step explanation:

Let b represent the speed of runner B. then the ratio of speeds is ...

  b/(b+5) = 8/18

  18b = 8(b +5) . . . . cross multiply

  10b = 40 . . . . . . . . subtract 8b

  b = 4 . . . . . . . . . . . divide by 10

Runner B's speed is 4 mph; runner A's speed is 5 mph more.

Runner A is running at 9 mph; Runner B is running at 4 mph.

You might be interested in
Need help with number four
Roman55 [17]
1. FALSE
2. TRUE
3. TRUE
4. FALSE

3 0
3 years ago
Justin bought some yarn from his Favorite craft store. He can make one score for 3/5 of a ball of yarn. If he purchases 15 balls
Svet_ta [14]

Justin can make 25 scraves with 15 balls of yarn

<h3><u>Solution:</u></h3>

Given that Justin can make one scarve for 3/5 of a ball of yarn

He purchases 15 balls of yarn

<em><u>To find: number of scarves Justin can make</u></em>

Number of scarves Justin can make with 15 balls of yarn can be found out by dividing 15 balls of yarn by 3/5 of a ball of yarn

\text {number of scarves }=\frac{\text { total yarn he has }}{\text { yarn needed for } 1 \text { scarve }}

\text {number of scarves }=\frac{15}{3 / 5}

\text {number of scarves }=\frac{15}{3} \times 5=25

Thus he can make 25 scraves

5 0
3 years ago
The driver was swimming at -20 feet. He came up 20 feet. What is the diver’s elevation now?
iren2701 [21]

Answer:0 feet

Step-by-step explanation:

-20+20=0

4 0
3 years ago
Read 2 more answers
I need help btw someone add me on insta please
mart [117]

Answer:

would bud but cant

Step-by-step explanation:

8 0
3 years ago
C=(4+y)h Solve for y
True [87]
Im Not 100% spüre but i Hope this helps:

C=4h+hy
C-4h/h= y

Y= C-4h/h

7 0
4 years ago
Other questions:
  • Sandra's dog weighs 3 1/2 pounds. Each dog he gains 2/3 of a pound. If he continues to gain this much weight each week, how much
    11·1 answer
  • -7 - (-8) + (-3) + 6 - 2 A) -2 B) 0 C) 1 D) 2
    14·2 answers
  • What number must you add to complete the square?
    13·2 answers
  • caleb and sarah are having a halloween party. they have 6 2/5 of pounds of candy to divide into 16 goodie bags. How much candy i
    9·1 answer
  • 4 yd 8 in + 6 yd 6 in=?
    12·1 answer
  • What is the value of 12 more than the quiotent of a number of and two decreased by 4 when n is 4
    5·1 answer
  • a water pail in your backyard has a small hole in it you notice that it has a Drained a total of 3.5 L in 4 days what is the ave
    13·1 answer
  • Find a polynomial function that has the given zeros. (There are many correct answers.)<br> −4, 6
    8·1 answer
  • Please help me!!! -Tom saved up $250 to spend on vacation. If he spends 843 a week for four weeks, how much money
    14·1 answer
  • I need Help ASAP !!!!!!!!!!!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!